13:56

Polyalphabetic Cipher (Vigenère Cipher)

19:18

Playfair Cipher

8:21

The Science of Codes: An Intro to Cryptography

15:33

Cryptanalysis of Vigenere cipher: not just how, but why it works

7:31

Feistel Cipher - Computerphile

12:11

Simple Explanation of the Birthday Paradox

13:48

How To Learn Any Skill So Fast It Feels Illegal

31:11

Ethical Hacker: "I'll Show You Why Google Has Just Shut Down Their Quantum Chip"